Paul Tomblin wrote:

In a previous article, Stubby said:

All the controller cares about is your speed. So he wants to know if
you are a "Cherokee" (Warrior, Arrow, ....) or a LearJet or a heavy.
That tells him about times and congestion problems, his job.


Well, they care enough about the speed differences between a Warrior and a
Dakota that they changed them all from PA-28s to P28As and P28Bs
respectively.


They being center guys. 20 knots to a tower controller is trivial.